Both added. If you guys care to cough up a short description and fill in blanks in author/maintainer fields, please.

Author/maintainer: iks
(I think I know what his full name is, but he goes by 'iks' so that's probably best)
I won't give his email without permission (obviously) but I'll ask if he wants it up there.

Description:
XAngband is a Zangband variant of somewhat relaxed difficulty.

Notable features:
Zelazny races and uniques replaced by traditional Angband or new Japanese ones.
Ego Shop that deals in high quality items.
Named ego items (one extra ability or resistance added).
New device using class - Artificer
New possession based class - Snatcher
New item - Staff of wishing

=========================================

Also it seems there may be an English release of TinyBand in the near future - I'll post again if there is.

As for author/ maintainer of DaJAngband, a more accurate description would be 'hacker'. Definetly not an author, since there's no way I could write the program from scratch without spending at least a couple more years dedicated to learning the programming language.
Anyway, it's me.
I didn't keep track of when it was released, although I can fill that in with the next release. Available for source & windows, current released version is 1.0.96.

Here's a short useable description from the DaJAngband website:
Purpose is to add a little flavor and character to vanilla Angband. This is done mostly through redoing the monster list and adding a few new classes and races. Other changes are mainly to complement the changes in the monster list and new classes.
I haven't stuck strictly with this purpose. It is after all DaJAngband, not Addflavorband, so, like any variant maintainer would, I put in stuff I like (wieldable staves, interesting new spells and monsters, monster stealth..), and take/leave out stuff which I don't like (multiple dungeons, flavorless monster names/descriptions..).

EDIT: (a little mistake: wieldable staves aren't implemented yet in 1.0.96. It is in 1.0.97 which isn't released yet.)